I just found another related ticket, which is more akin to the problem
I described:
http://trac.sagemath.org/sage_trac/ticket/7579

Sorry about the noise, but it took me a while to find this ticket, so
I thought I'd better add it to this thread.

Cheers
Stan

On Jul 19, 12:27 am, Stan Schymanski <schym...@gmail.com> wrote:
> Yes, I thought it worked well after the 'wasted space' problem was
> solved, but I cannot tell for sure.
>
> Here is the ticket:http://trac.sagemath.org/sage_trac/ticket/8776
> Sorry, should have mentioned the ticket number in the first place.
>
> I don't know why you and others have the same revision several times
> while I have none, but I guess the effect is the same. You may as well
> have none. I hope this problem can be solved as soon as possible, as I
> am missing already the great feeling of safety I had about working in
> the notebook. No computer crash used to scare me, until now.
>
> Cheers,Stan
>
> On 16/07/10 23:20, kcrisman wrote:
>
> > I can confirm that in 4.4.4 ALL revisions (there were 11, including
> > some from '1 day ago') of a worksheet I am working on are identical to
> > the current revision, which they definitely should not be!
>
> > This isn't exactly the same asStan'sissue, but almost certainly
> > related.  Stan, can you post which ticket is related to this (you
> > mention one below)?
>
> > I agree that this is very bad.  I am pretty sure there was a time
> > where the 'wasted space' was fixed but this didn't happen, but that
> > may have been before the switch to the sagenb package.
>
> > - kcrisman
>
> > On Jul 16, 10:38 am,StanSchymanski<schym...@gmail.com>  wrote:
> >> Dear all,
>
> >> There has been a post in April about problems with the undo function
> >> in the notebook and a ticket was created, but I have to report that
> >> the undo function is stuffed entirely both in sage 4.4.3 and 4.4.4.
> >> I just saved and closed a worksheet that was misbehaving and when I re-
> >> opened it, it was in the version of ages ago and the undo list is
> >> empty. The undo list is actually empty for the other notebooks as
> >> well, so I haven't only lost a day of work but I may be losing more.
> >> Is there a way to use the old notebook again, where it was working
> >> well, despite "wasting space"? This is a major regression in my eyes.
>
> >> Thanks for your help!
>
> >> Cheers,
> >>Stan

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